A feed device for a PET sheet extruder

Abstract

The application relates to the technical field of PET sheet extruders, in particular to a feeding device of a PET sheet extruder. The feeding device of the PET sheet extruder comprises a feeding cylinder and a feeding hopper, the feeding hopper is communicated with the feeding cylinder and used for feeding the feeding cylinder; a material collecting box is fixedly installed on one side of the feeding cylinder, a through slot is formed in the side wall of the feeding cylinder and communicated with the material collecting box and the feeding cylinder; a screen is movably arranged in the feeding cylinder and one end of the screen is inserted into the through slot, the screen has two states of horizontal and inclined, when the screen is in the inclined state, the screen is inclined from top to bottom towards the direction of the through slot; a switching assembly is used for driving the screen to switch from the horizontal state to the inclined state; and a vibrating assembly is used for driving the screen to vibrate when the screen is in the horizontal state. The application can reduce the situation that small-size raw materials flow into the material collecting box without passing through the screen, reduce the situation that a large amount of raw materials need to be re-fed, and optimize the feeding process.

Description

Technical Field

[0001] This application relates to the field of PET sheet extruder technology, and in particular to a feeding device for a PET sheet extruder. Background Technology

[0002] In the production process of PET sheets, the extruder is a key piece of equipment, and the feeding device is an important component of the extruder, whose performance directly affects the quality and production efficiency of PET sheets.

[0003] The utility model patent with publication number CN217293431U discloses a feeding device for a PET sheet extruder. It filters the raw material through a screen, allowing larger raw materials to slide down the conical screen and enter the collection box through the discharge port, while smaller raw materials pass through the screen holes and fall into the extruder barrel through the discharge port, thereby effectively ensuring the quality of the final product.

[0004] During continuous feeding, due to the limited screening speed of the screen, a large amount of small-sized raw materials may slide into the collection box along with other materials before passing through the screen holes, resulting in a large amount of raw materials needing to be re-fed, which is quite cumbersome. Utility Model Content

[0005] The purpose of this application is to provide a feeding device for a PET sheet extruder, which can reduce the occurrence of small-sized raw materials flowing into the collection box before passing through the screen, reduce the need for refeeding large amounts of raw materials, and optimize the feeding process.

[0006] The feeding device for a PET sheet extruder provided in this application adopts the following technical solution:

[0007] A feeding device for a PET sheet extruder, comprising:

[0008] A feed cylinder and a feed funnel, wherein the feed funnel is connected to the feed cylinder for feeding material into the feed cylinder;

[0009] A collection box is fixedly installed on one side of the feed cylinder. The side wall of the feed cylinder is provided with a through groove, which is connected to the collection box and the feed cylinder respectively.

[0010] A screen is movably disposed inside the feed cylinder and one end is inserted into the through groove. The screen has two states: horizontal and inclined. When the screen is in the inclined state, the screen is inclined from top to bottom towards the through groove.

[0011] A switching component is used to switch the screen from a horizontal state to an inclined state;

[0012] A vibration assembly is used to drive the screen to vibrate when the screen is in a horizontal state.

[0013] Optionally, the switching assembly includes a rotating shaft, a drive rod, and a telescopic component. The drive rod is slidably disposed on the feed hopper. The rotating shaft is connected to the drive rod. The end of the screen away from the through groove is rotatably connected to the rotating shaft. The telescopic component is used to drive the rotating shaft to move in the vertical direction.

[0014] Optionally, the drive rod includes a first connecting rod and a second connecting rod. The first connecting rod is connected to the telescopic member. A telescopic groove is provided at the end of the first connecting rod away from the telescopic member. One end of the second connecting rod is slidably disposed in the telescopic groove, and the other end is connected to the rotating shaft. An elastic member is disposed in the telescopic groove. One end of the elastic member acts on the inner wall of the telescopic groove, and the other end acts on the second connecting rod.

[0015] Optionally, the telescopic groove includes a first slide groove and a second slide groove that are interconnected. The inner diameter of the first slide groove is larger than the inner diameter of the second slide groove. A slider is fixedly connected to the second connecting rod. The slider is slidably disposed in the first slide groove and its outer diameter is larger than the inner diameter of the second slide groove.

[0016] Optionally, the vibration assembly includes a rotating component and a cam, the rotating component being installed inside the feed cylinder, and the cam being fixed to the output end of the rotating component and capable of abutting against the screen.

[0017] Optionally, a baffle is fixedly connected to the drive rod, and the baffle is disposed above the screen to restrict the screen from rotating upward.

[0018] This application allows the screen to switch between horizontal and inclined states by setting the switching components. When the screen is horizontal, it screens the raw materials, and when it is inclined, it transports large particles of raw materials to the collection box for collection, reducing the amount of small particles entering the collection box, thereby reducing repeated feeding and optimizing the feeding process. Attached Figure Description

[0019] Figure 1 This is a cross-sectional structural schematic diagram of the feeding device of a PET sheet extruder according to an embodiment of this application.

[0020] Figure 2 yes Figure 1 A magnified view of part A in the diagram.

[0021] In the diagram, 1 is the feed cylinder; 11 is the through groove; 2 is the feed funnel; 21 is the feed pipe; 3 is the collection box; 4 is the screen; 5 is the switching assembly; 51 is the rotating shaft; 52 is the drive rod; 521 is the first connecting rod; 522 is the second connecting rod; 523 is the telescopic groove; 5231 is the first sliding groove; 5232 is the second sliding groove; 524 is the elastic element; 525 is the slider; 53 is the telescopic element; 54 is the plate; 6 is the vibration assembly; 61 is the rotating element; 62 is the cam; and 7 is the baffle. Detailed Implementation

[0022] The following is in conjunction with the appendix Figure 1 - Appendix Figure 2 This application will be described in further detail below.

[0023] A feeding device for a PET sheet extruder, as described in the following figure. Figure 1 The extruder includes a feed cylinder 1 and a feed funnel 2. The feed funnel 2 is connected to the top surface of the feed cylinder 1 and is used to feed material into the feed cylinder 1. The bottom surface of the feed cylinder 1 is open. The raw material entering the feed cylinder 1 enters the extruder for processing through the bottom surface of the feed cylinder 1. Specifically, the feed funnel 2 is connected to a feed pipe 21. The raw material enters the feed funnel 2 from the feed pipe 21 and then enters the feed cylinder 1 through the feed funnel 2. A collection box 3 is fixedly installed on the side wall of the feed cylinder 1. A through groove 11 is opened on the side wall of the feed cylinder 1. The through groove 11 is connected to the collection box 3 and the feed cylinder 1 respectively. The large particles of raw material screened out will slide into the collection box 3. In this embodiment, the collection box 3 is provided with a pipe. The large particles of raw material collected in the collection box 3 are transferred to the next station for processing through the pipe.

[0024] A screen 4 is installed inside the feed cylinder 1. The screen 4 is movably installed inside the feed cylinder 1 and one end is inserted into the through groove 11. The screen 4 has two states: horizontal and inclined. When the screen 4 is in the horizontal state, the screen 4 can vibrate. At this time, the raw material is screened, and small particles of raw material are fed through the screen holes of the screen 4 from the opening end of the feed cylinder 1. Large particles of raw material remain on the screen 4. At this time, the screen 4 switches from the horizontal state to the inclined state. The inclined screen 4 is set from top to bottom towards the through groove 11. At this time, the large particles of raw material will flow into the collection box 3 for collection.

[0025] Furthermore, there are two collection boxes 3 and two screens 4. The two collection boxes 3 are distributed on both sides of the feed cylinder 1, and the two screens 4 are set one-to-one with the two collection boxes 3, and both can be tilted from top to bottom towards the corresponding collection box 3.

[0026] Specifically, it also includes a switching component 5, which is used to switch the screen 4 from a horizontal state to an inclined state or from an inclined state to a horizontal state.

[0027] The switching component 5 includes a rotating shaft 51, a drive rod 52, and a telescopic component 53. In this embodiment, the telescopic component 53 is a telescopic cylinder and is installed on the feeding hopper 2. The drive rod 52 is slidably disposed on the feeding hopper 2. One end of the drive rod 52 is located inside the feeding cylinder 1 and is fixedly connected to the rotating shaft 51, while the other end extends out of the feeding hopper 2 and is fixedly connected to the output end of the telescopic component 53. Through the extension and retraction of the telescopic component 53, the drive rod 52 is moved, thereby causing the rotating shaft 51 to move in the vertical direction.

[0028] In this embodiment, the end of the drive rod 52 that protrudes from the feed hopper 2 is fixedly connected to the plate 54, and the output end of the telescopic member 53 is fixed on the plate 54. The telescopic member 53 drives the plate 54 to move, thereby driving the drive rod 52 to slide.

[0029] One end of the screen 4 is set in the through groove 11, and the other end is rotatably connected to the rotating shaft 51. As the drive rod 52 moves upward, it drives the end of the screen 4 away from the through groove 11 to move upward. At this time, the end of the screen 4 inserted into the through groove 11 gradually moves into the feed cylinder 1, and the screen 4 gradually tilts. When the screen 4 tilts to a specified angle, the end of the screen 4 inserted into the through groove 11 is still in contact with the through groove 11. Large particles of raw material will flow into the collection box 3 for collection under the action of gravity.

[0030] Reference Figure 2 Furthermore, the drive rod 52 includes a first connecting rod 521 and a second connecting rod 522. The first connecting rod 521 is fixedly connected to the telescopic member 53 through the plate 54. A telescopic groove 523 is provided at the end of the first connecting rod 521 away from the telescopic member 53. One end of the second connecting rod 522 is slidably disposed in the telescopic groove 523, and the other end is fixedly connected to the rotating shaft 51. An elastic member 524 is provided in the telescopic groove 523. One end of the elastic member 524 acts on the inner wall of the telescopic groove 523, and the other end acts on the second connecting rod 522.

[0031] In this embodiment, the elastic element 524 is a spring, with one end of the spring fixed to the inner wall of the telescopic groove 523 and the other end fixed to the second connecting rod 522.

[0032] During the vibration of the screen 4, the second connecting rod 522 is driven to reciprocate in the vertical direction. During the reciprocating motion of the second connecting rod 522, the first connecting rod 521 and the telescopic member 53 remain fixed and do not need to move with the second connecting rod 522.

[0033] Furthermore, the telescopic groove 523 includes a first sliding groove 5231 and a second sliding groove 5232 that are interconnected. The inner diameter of the first sliding groove 5231 is larger than the inner diameter of the second sliding groove 5232. A slider 525 is fixedly connected to the second connecting rod 522. The slider 525 is slidably disposed within the first sliding groove 5231 and its outer diameter is larger than the inner diameter of the second sliding groove 5232. When the screen 4 is in a horizontal state, the slider 525 abuts against the inner bottom wall of the first sliding groove 5231. When the telescopic member 53 extends, it drives the first connecting rod 521 to move. Due to the limitation of the inner wall of the first sliding groove 5231, the second connecting rod 522 is driven to move, thereby adjusting the tilt angle of the screen 4. Through the setting of the first sliding groove 5231 and the second sliding groove 5232, during the process of the first connecting rod 521 driving the second connecting rod 522 to move, there is no need for the elastic member 524 to pull the second connecting rod 522 to move, thus ensuring the service life of the elastic member 524 and avoiding excessive deformation of the elastic member 524.

[0034] Reference Figure 1 Furthermore, it also includes a vibration component 6, which drives the screen 4 to vibrate, thereby increasing the screening efficiency of the screen 4 and preventing excessive raw materials from accumulating on the screen 4.

[0035] The vibration assembly 6 includes a rotating component 61 and a cam 62. In this embodiment, the rotating component 61 is a motor and is fixedly connected to the inner wall of the feed cylinder 1. The cam 62 is fixedly connected to the output end of the rotating component 61 and can abut against the bottom surface of the screen 4. By rotating the rotating component 61, the cam 62 is driven to rotate, which causes the cam 62 to drive the screen 4 to move up and down, thereby causing the screen 4 to vibrate and thus screen and filter the raw materials.

[0036] Furthermore, a baffle 7 is fixedly connected to the drive rod 52. The baffle 7 is set above the screen 4 and is used to restrict the screen 4 from rotating upward. During the rotation of the cam 62, one end of the screen 4's pivot shaft 51 is prone to rotating upward, which affects the vibration screening efficiency of the screen 4. By setting the baffle 7, the rotation angle of the screen 4 is restricted, so that the screen 4 can only rotate downward, thereby ensuring the vibration stability of the screen 4 and ensuring the screening efficiency of the screen 4.

[0037] The embodiments described in this specific implementation are preferred embodiments of this application and are not intended to limit the scope of protection of this application. Identical components are represented by the same reference numerals. Therefore, all equivalent changes made to the structure, shape, and principle of this application should be covered within the scope of protection of this application.

Claims

1. A feeding device for a PET sheet extruder, characterized in that, include: Feed cylinder (1) and feed funnel (2), wherein the feed funnel (2) is connected to the feed cylinder (1) for feeding material into the feed cylinder (1); The material collection box (3) is fixedly installed on one side of the feed cylinder (1). The side wall of the feed cylinder (1) is provided with a through groove (11), which is connected to the material collection box (3) and the feed cylinder (1) respectively. The screen (4) is movably set inside the feed cylinder (1) and one end is inserted into the through groove (11). The screen (4) has two states: horizontal and inclined. When the screen (4) is in the inclined state, the screen (4) is inclined from top to bottom towards the through groove (11). The switching component (5) is used to drive the screen (4) from a horizontal state to an inclined state; Vibration component (6) is used to drive the screen (4) to vibrate when the screen (4) is in a horizontal state.

2. The feeding device for a PET sheet extruder according to claim 1, characterized in that, The switching component (5) includes a rotating shaft (51), a drive rod (52), and a telescopic component (53). The drive rod (52) is slidably disposed on the feed hopper (2). The rotating shaft (51) is connected to the drive rod (52). The end of the screen (4) away from the through groove (11) is rotatably connected to the rotating shaft (51). The telescopic component (53) is used to drive the rotating shaft (51) to move in the vertical direction.

3. The feeding device for a PET sheet extruder according to claim 2, characterized in that, The drive rod (52) includes a first connecting rod (521) and a second connecting rod (522). The first connecting rod (521) is connected to the telescopic member (53). The first connecting rod (521) has a telescopic groove (523) at one end away from the telescopic member (53). One end of the second connecting rod (522) is slidably disposed in the telescopic groove (523), and the other end is connected to the rotating shaft (51). An elastic member (524) is disposed in the telescopic groove (523). One end of the elastic member (524) acts on the inner wall of the telescopic groove (523), and the other end acts on the second connecting rod (522).

4. The feeding device for a PET sheet extruder according to claim 3, characterized in that, The telescopic groove (523) includes a first slide groove (5231) and a second slide groove (5232) that are interconnected. The inner diameter of the first slide groove (5231) is larger than the inner diameter of the second slide groove (5232). A slider (525) is fixedly connected to the second connecting rod (522). The slider (525) is slidably disposed in the first slide groove (5231) and its outer diameter is larger than the inner diameter of the second slide groove (5232).

5. A feeding device for a PET sheet extruder according to claim 3 or 4, characterized in that, The vibration assembly (6) includes a rotating component (61) and a cam (62). The rotating component (61) is installed inside the feed cylinder (1), and the cam (62) is fixed at the output end of the rotating component (61) and can abut against the screen (4).

6. The feeding device for a PET sheet extruder according to claim 5, characterized in that, A baffle (7) is fixedly connected to the drive rod (52). The baffle (7) is positioned above the screen (4) to restrict the screen (4) from rotating upward.

Images